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alternate sequential filter More...
alternate sequential filter
Usage: asf in.pgm [rmin] rmax out.pgm
Description:
Alternate sequential filter for grayscale images (for binary images use preferably asfbin).
Disc-shaped structuring elements of increasing radius, ranging from 1 (or rmin if this parameter is specified) to rmax, are generated.
Let D1...Dn be these structuring elements, sorted by increasing radius.
Let I0 = in.pgm, the ith intermediate result Ii is obtained by the closing of the opening of Ii-1 by the structuring element Di.
The result out.pgm contains the final result In.
Giving a value 0 for the optional parameter rmin has the effect of beginning by a closing instead of an opening.
Types supported: byte 2d, byte 3d
Category: morpho
1.7.3